Period Associated With in-Utero Development

This page is the CodyCross answer for the clue below from Top Secret, Group 2081, Puzzle 4 (Decoy Operation).

Question is: Period Associated With in-Utero Development

and the answer is: GESTATION

Word Meaning:

GESTATION — The period of time during which an animal or human offspring physically develops inside the mother's body until it is born.

Definitions from Wiktionary.